915085157281 has 32 divisors (see below), whose sum is σ = 993185182080. Its totient is φ = 840473625600.

The previous prime is 915085157191. The next prime is 915085157303. The reversal of 915085157281 is 182751580519.

915085157281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-915085157281 is a prime.

It is a super-2 number, since 2×915085157281² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (915085157381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23685726 + ... + 23724328.

It is an arithmetic number, because the mean of its divisors is an integer number (31037036940).

Almost surely, 2^915085157281 is an apocalyptic number.

It is an amenable number.

915085157281 is a deficient number, since it is larger than the sum of its proper divisors (78100024799).

915085157281 is a wasteful number, since it uses less digits than its factorization.

915085157281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38977.

The product of its (nonzero) digits is 1008000, while the sum is 52.

The spelling of 915085157281 in words is "nine hundred fifteen billion, eighty-five million, one hundred fifty-seven thousand, two hundred eighty-one".